Created as part of a collaborative effort by such organizations as the National Science Foundation and the American Association of Physics Teachers, the Physical Sciences Resource Center (PSRC) serves as a clearinghouse of information and resources for physical sciences education for grades K-20. Visitors to the site can browse the collection by topic, object type, or grade level, and may even organize the materials they need into a personalized electronic "filing cabinet". To utilize such features, visitors will need to complete a free registration, but they will also gain the ability to submit materials, personalize searches, and add comments. To get some basic sense of the materials here, visitors will want to look at the "Featured Items" on the site's homepage, which in recent times has featured the Open Source Physics collection and a workshop manual titled "Teaching About Energy". Finally, visitors can also engage in lively discussions about the world of physical science education here, courtesy of their online forums.